Transformer-coupled audio amplifier

Discussion in 'General Electronics Chat' started by louis_nashelsky, May 9, 2009.

  1. louis_nashelsky

    Thread Starter New Member

    May 9, 2009
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    To All:

    I am looking for a transformer-coupled transistor audio amplifier design. Can someone share with me websites, articles and schematic diagram if you have. Thank you!
     
  2. studiot

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    Nov 9, 2007
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  3. Audioguru

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    Dec 20, 2007
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    In 1955 Philips made a transistor radio with an output transformer.
     
  4. eblc1388

    Senior Member

    Nov 28, 2008
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    Minor (or major) mistake.

    [​IMG]
     
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  5. studiot

    AAC Fanatic!

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    Well spotted. Should I now sell my shares in Philips?
     
  6. Audioguru

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    Here as a transistor amplifier from 1960. It has the usual germanium transistors and a driver transformer.
    The output transformer is unusual because the speaker is connected to it like an auto-transformer and a separate winding is used for negative feedback.
     
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